From edc20ba4437a861b188b0477aac17b250ebcb5eb Mon Sep 17 00:00:00 2001 From: Lukas Fleischer Date: Wed, 1 Jun 2011 20:57:19 +0200 Subject: Split line editing functions into separate file Move getstring() related stuff into a separate file as a first step on our way to UTF-8 support for line editing helpers. Signed-off-by: Lukas Fleischer --- src/Makefile.am | 1 + src/calcurse.h | 6 +- src/getstring.c | 220 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/utils.c | 183 ---------------------------------------------- 4 files changed, 225 insertions(+), 185 deletions(-) create mode 100644 src/getstring.c diff --git a/src/Makefile.am b/src/Makefile.am index b24a51d..8fff8e3 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -14,6 +14,7 @@ calcurse_SOURCES = \ custom.c \ day.c \ event.c \ + getstring.c \ help.c \ io.c \ keys.c \ diff --git a/src/calcurse.h b/src/calcurse.h index 52e3498..8e71a27 100644 --- a/src/calcurse.h +++ b/src/calcurse.h @@ -658,6 +658,10 @@ void event_paste_item (void); void help_wins_init (struct scrollwin *, int, int, int, int); void help_screen (void); +/* getstring.c */ +enum getstr getstring (WINDOW *, char *, int, int, int); +int updatestring (WINDOW *, char **, int, int); + /* io.c */ unsigned io_fprintln (const char *, const char *, ...); void io_init (char *, char *); @@ -845,8 +849,6 @@ void status_mesg (char *, char *); void erase_window_part (WINDOW *, int, int, int, int); WINDOW *popup (int, int, int, int, char *, char *, int); void print_in_middle (WINDOW *, int, int, int, char *); -enum getstr getstring (WINDOW *, char *, int, int, int); -int updatestring (WINDOW *, char **, int, int); int is_all_digit (char *); long get_item_time (long); int get_item_hour (long); diff --git a/src/getstring.c b/src/getstring.c new file mode 100644 index 0000000..4df1d66 --- /dev/null +++ b/src/getstring.c @@ -0,0 +1,220 @@ +/* + * Calcurse - text-based organizer + * + * Copyright (c) 2004-2011 calcurse Development Team + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the + * following disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the + * following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Send your feedback or comments to : misc@calcurse.org + * Calcurse home page : http://calcurse.org + * + */ + +#include "calcurse.h" + +/* Print the string at the desired position. */ +static void +showstring (WINDOW *win, int x, int y, char *str, int len, int scroff, + int curpos) +{ + char c = 0; + + /* print string */ + mvwaddnstr (win, y, x, &str[scroff], -1); + wclrtoeol (win); + + /* print scrolling indicator */ + if (scroff > 0 && scroff < len - col) + c = '*'; + else if (scroff > 0) + c = '<'; + else if (scroff < len - col) + c = '>'; + mvwprintw (win, y, col - 1, "%c", c); + + /* print cursor */ + wmove (win, y, curpos - scroff); + + if (curpos >= len) + waddch (win, SPACE | A_REVERSE); + else + waddch (win, str[curpos] | A_REVERSE); +} + +/* Delete a character at the given position in string. */ +static void +del_char (int pos, char *str) +{ + str += pos; + memmove (str, str + 1, strlen (str) + 1); +} + +/* Add a character at the given position in string. */ +static void +ins_char (int pos, int ch, char *str) +{ + str += pos; + memmove (str + 1, str, strlen (str) + 1); + *str = ch; +} + +static void +bell (void) +{ + printf ("\a"); +} + +/* + * Getstring allows to get user input and to print it on a window, + * even if noecho() is on. This function is also used to modify an existing + * text (the variable string can be non-NULL). + * We need to do the echoing manually because of the multi-threading + * environment, otherwise the cursor would move from place to place without + * control. + */ +enum getstr +getstring (WINDOW *win, char *str, int l, int x, int y) +{ + const int pgsize = col / 3; + + int len = strlen (str); + int curpos = len; + int scroff = 0; + int ch; + + custom_apply_attr (win, ATTR_HIGHEST); + + for (;;) { + while (curpos < scroff) + scroff -= pgsize; + while (curpos >= scroff + col - 1) + scroff += pgsize; + + showstring (win, x, y, str, len, scroff, curpos); + wins_doupdate (); + + if ((ch = wgetch (win)) == '\n') break; + switch (ch) + { + case KEY_BACKSPACE: /* delete one character */ + case 330: + case 127: + case CTRL ('H'): + if (curpos > 0) + { + del_char ((--curpos), str); + len--; + } + else + bell (); + break; + case CTRL ('D'): /* delete next character */ + if (curpos < len) + { + del_char (curpos, str); + len--; + } + else + bell (); + break; + case CTRL ('W'): /* delete a word */ + if (curpos > 0) { + while (curpos && str[curpos - 1] == ' ') + { + del_char ((--curpos), str); + len--; + } + while (curpos && str[curpos - 1] != ' ') + { + del_char ((--curpos), str); + len--; + } + } + else + bell (); + break; + case CTRL ('K'): /* delete to end-of-line */ + str[curpos] = 0; + len = curpos; + break; + case CTRL ('A'): /* go to begginning of string */ + curpos = 0; + break; + case CTRL ('E'): /* go to end of string */ + curpos = len; + break; + case KEY_LEFT: /* move one char backward */ + case CTRL ('B'): + if (curpos > 0) curpos--; + break; + case KEY_RIGHT: /* move one char forward */ + case CTRL ('F'): + if (curpos < len) curpos++; + break; + case ESCAPE: /* cancel editing */ + return (GETSTRING_ESC); + break; + default: /* insert one character */ + if (len < l - 1) + { + ins_char ((curpos++), ch, str); + len++; + } + } + } + + custom_remove_attr (win, ATTR_HIGHEST); + + return (len == 0 ? GETSTRING_RET : GETSTRING_VALID); +} + +/* Update an already existing string. */ +int +updatestring (WINDOW *win, char **str, int x, int y) +{ + int len = strlen (*str); + char *buf; + enum getstr ret; + + EXIT_IF (len + 1 > BUFSIZ, _("Internal error: line too long")); + + buf = mem_malloc (BUFSIZ); + (void)memcpy (buf, *str, len + 1); + + ret = getstring (win, buf, BUFSIZ, x, y); + + if (ret == GETSTRING_VALID) + { + len = strlen (buf); + *str = mem_realloc (*str, len + 1, 1); + EXIT_IF (*str == NULL, _("out of memory")); + (void)memcpy (*str, buf, len + 1); + } + + mem_free (buf); + return ret; +} diff --git a/src/utils.c b/src/utils.c index c861195..1b91609 100644 --- a/src/utils.c +++ b/src/utils.c @@ -230,189 +230,6 @@ print_in_middle (WINDOW *win, int starty, int startx, int width, char *string) custom_remove_attr (win, ATTR_HIGHEST); } -/* Print the string at the desired position. */ -static void -showstring (WINDOW *win, int x, int y, char *str, int len, int scroff, - int curpos) -{ - char c = 0; - - /* print string */ - mvwaddnstr (win, y, x, &str[scroff], -1); - wclrtoeol (win); - - /* print scrolling indicator */ - if (scroff > 0 && scroff < len - col) - c = '*'; - else if (scroff > 0) - c = '<'; - else if (scroff < len - col) - c = '>'; - mvwprintw (win, y, col - 1, "%c", c); - - /* print cursor */ - wmove (win, y, curpos - scroff); - - if (curpos >= len) - waddch (win, SPACE | A_REVERSE); - else - waddch (win, str[curpos] | A_REVERSE); -} - -/* Delete a character at the given position in string. */ -static void -del_char (int pos, char *str) -{ - str += pos; - memmove (str, str + 1, strlen (str) + 1); -} - -/* Add a character at the given position in string. */ -static void -ins_char (int pos, int ch, char *str) -{ - str += pos; - memmove (str + 1, str, strlen (str) + 1); - *str = ch; -} - -static void -bell (void) -{ - printf ("\a"); -} - -/* - * Getstring allows to get user input and to print it on a window, - * even if noecho() is on. This function is also used to modify an existing - * text (the variable string can be non-NULL). - * We need to do the echoing manually because of the multi-threading - * environment, otherwise the cursor would move from place to place without - * control. - */ -enum getstr -getstring (WINDOW *win, char *str, int l, int x, int y) -{ - const int pgsize = col / 3; - - int len = strlen (str); - int curpos = len; - int scroff = 0; - int ch; - - custom_apply_attr (win, ATTR_HIGHEST); - - for (;;) { - while (curpos < scroff) - scroff -= pgsize; - while (curpos >= scroff + col - 1) - scroff += pgsize; - - showstring (win, x, y, str, len, scroff, curpos); - wins_doupdate (); - - if ((ch = wgetch (win)) == '\n') break; - switch (ch) - { - case KEY_BACKSPACE: /* delete one character */ - case 330: - case 127: - case CTRL ('H'): - if (curpos > 0) - { - del_char ((--curpos), str); - len--; - } - else - bell (); - break; - case CTRL ('D'): /* delete next character */ - if (curpos < len) - { - del_char (curpos, str); - len--; - } - else - bell (); - break; - case CTRL ('W'): /* delete a word */ - if (curpos > 0) { - while (curpos && str[curpos - 1] == ' ') - { - del_char ((--curpos), str); - len--; - } - while (curpos && str[curpos - 1] != ' ') - { - del_char ((--curpos), str); - len--; - } - } - else - bell (); - break; - case CTRL ('K'): /* delete to end-of-line */ - str[curpos] = 0; - len = curpos; - break; - case CTRL ('A'): /* go to begginning of string */ - curpos = 0; - break; - case CTRL ('E'): /* go to end of string */ - curpos = len; - break; - case KEY_LEFT: /* move one char backward */ - case CTRL ('B'): - if (curpos > 0) curpos--; - break; - case KEY_RIGHT: /* move one char forward */ - case CTRL ('F'): - if (curpos < len) curpos++; - break; - case ESCAPE: /* cancel editing */ - return (GETSTRING_ESC); - break; - default: /* insert one character */ - if (len < l - 1) - { - ins_char ((curpos++), ch, str); - len++; - } - } - } - - custom_remove_attr (win, ATTR_HIGHEST); - - return (len == 0 ? GETSTRING_RET : GETSTRING_VALID); -} - -/* Update an already existing string. */ -int -updatestring (WINDOW *win, char **str, int x, int y) -{ - int len = strlen (*str); - char *buf; - enum getstr ret; - - EXIT_IF (len + 1 > BUFSIZ, _("Internal error: line too long")); - - buf = mem_malloc (BUFSIZ); - (void)memcpy (buf, *str, len + 1); - - ret = getstring (win, buf, BUFSIZ, x, y); - - if (ret == GETSTRING_VALID) - { - len = strlen (buf); - *str = mem_realloc (*str, len + 1, 1); - EXIT_IF (*str == NULL, _("out of memory")); - (void)memcpy (*str, buf, len + 1); - } - - mem_free (buf); - return ret; -} - /* checks if a string is only made of digits */ int is_all_digit (char *string) -- cgit v1.2.3-70-g09d2